Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc tap toan snippets" » "duc tap doan snippets", "duc tap quan snippets", "duc bai toan snippets", "duoc tap toan snippets", "duc tan toan snippets", "tuc tap toan snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("duc tap toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc tap toan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc tap toan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc tap toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.